Making changes within your RRSP from the US

I am a Canadian living in the States and want to sell off some of my mutual funds and buy stock within my RRSP. All of my current RRSP portfolio is held within a mutual fund company who can not trade stock. Can any one direct me to a bank,trading house or any financial institution who I could transfer a portion of my portfolio over to, in order to be able to make such a deal.

Depends on your tax status. If you're still filing a T1 in Canada you can just look up the different banks, ING etc. who offer different RRSP options. If you've moved your tax home to the US (i.e. you file a 1040 instead of a 1040NR and no longer file a T1 in Canada) then doing anything with your RRSP is really complex because technically it's a foreign asset and you'd be better off moving it over gradually to a 401(k).